Dual sim 4G keep switching to 2G

[John1123]

After new update dual Sim 4g is not working properly. One of the Sim network keeps changing from 4g to 2g (Airtel). It works fine with one Sim turned off but as soon soon as I turn on both the Sim in 4G mode one of the them start converting to 2G mode automatically even. I am using Samsung m21. If anyone else facing the same problem in M21 please raise a complaint to Samsung and support this post so that Samsung can provide some update.

[John1123]

This is a temporary solution after few minutes it again starts switching to 2G.

[John1123]

Yeah doing this from the last few days.

[John1123]

I felt like cheated after buying M21. My Mi phone was way better than this **bleep**.

[John1123]

Never ever gonna buy Samsung device.

[John1123]

Even factory reset didn't worked for me.

[John1123]

?

[Samsung_Support1]

Dear Samsung Member,

Greetings from Samsung Customer Support!

To resolve your device network issue please visit this link: https://www.samsung.com/in/support/mobile-devices/samsung-mobile-network-issues/#:~:text=1%20Check%2....

For further assistance, register your concern in Samsung Members Application (Open Samsung Members Application > Get help > Send Feedback > Error report/Ask questions).

Thank you for writing to Samsung.

Warm Regards,
Samsung Customer Support

[Harnish1985]

facing same issue.. just bought M21 3 days back